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-rw-r--r--math/test-signgam-main.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/math/test-signgam-main.c b/math/test-signgam-main.c
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+/* Test lgamma functions do not set signgam for ISO C.
+ Copyright (C) 2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#undef _LIBC
+#undef _GNU_SOURCE
+#define _ISOMAC
+
+#include <math.h>
+#include <stdio.h>
+
+#define INITVAL ((TYPE) -1 / 3)
+
+#if DO_INIT
+TYPE signgam = INITVAL;
+#else
+TYPE signgam;
+#endif
+
+#define RUN_TESTS(FUNC, TYPE) \
+ do \
+ { \
+ volatile TYPE a, b, c __attribute__ ((unused)); \
+ a = 0.5; \
+ b = -0.5; \
+ signgam = INITVAL; \
+ c = FUNC (a); \
+ if (signgam == INITVAL) \
+ puts ("PASS: " #FUNC " (0.5) setting signgam"); \
+ else \
+ { \
+ puts ("FAIL: " #FUNC " (0.5) setting signgam"); \
+ result = 1; \
+ } \
+ signgam = INITVAL; \
+ c = FUNC (b); \
+ if (signgam == INITVAL) \
+ puts ("PASS: " #FUNC " (-0.5) setting signgam"); \
+ else \
+ { \
+ puts ("FAIL: " #FUNC " (-0.5) setting signgam"); \
+ result = 1; \
+ } \
+ } \
+ while (0)
+
+int
+main (void)
+{
+ int result = 0;
+ RUN_TESTS (lgammaf, float);
+ RUN_TESTS (lgamma, double);
+#ifndef NO_LONG_DOUBLE
+ RUN_TESTS (lgammal, long double);
+#endif
+ return result;
+}